@article{fdi:010082552,
  title = {{T}rends in sympatric otariid populations suggest resource limitations in the {P}eruvian {H}umboldt {C}urrent {S}ystem},
  author = {{C}ardenas-{A}layza, {S}. and {G}utierrez, {D}. and {T}remblay, {Y}ann},
  editor = {},
  language = {{ENG}},
  abstract = {{S}ympatric species evolve mechanisms to avoid competition and coexist. {I}n the {H}umboldt {C}urrent {S}ystem ({HCS}), populations of {S}outh {A}merican sea lions ({SASL}, {O}taria byronia) and {S}outh {A}merican fur seals ({SAFS}, {A}rctocephalus australis) fluctuate mostly due to {ENSO} events and prey availability. {W}e evaluate population trajectories of {P}eruvian sympatric otariids and discuss mechanisms for competition and/or resource limitation. {F}or this purpose, we analyzed population trajectories of {SASL} and {SAFS} in a sympatric breeding site in {P}unta {S}an {J}uan, {P}eru between 2001 and 2019. {W}avelet analysis was used to extract trends and derivatives to estimate rates and turning points. {A}ge-class proportions and biomass times series were constructed from weekly counts and evaluated. {B}oth populations show a growth phase and subsequent decline. {SAFS} started to decline similar to 2.25 years before and at a rate 1.5 times faster than {SASL}. {D}ecrease in juvenile age-class suggests that resource limitation is the main contributing factor for current population decline.},
  keywords = {{P}eru ; {P}unta {S}an {J}uan ; {P}opulation decline ; {C}ompetition ; {F}ur seal ; {S}ea lion ; {O}taria byronia ; {A}rctocephalus australis ; {PEROU} ; {PACIFIQUE} ; {PUNTA} {SAN} {JUAN}},
  booktitle = {},
  journal = {{M}arine {E}nvironmental {R}esearch},
  volume = {169},
  numero = {},
  pages = {105349 [11 ]},
  ISSN = {0141-1136},
  year = {2021},
  DOI = {10.1016/j.marenvres.2021.105349},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082552},
}